I'm working on Peano Axioms in Agda and I've hit a bit of a sticking point

Posted by Schroedinger on Stack Overflow See other posts from Stack Overflow or by Schroedinger
Published on 2010-04-05T04:05:21Z Indexed on 2010/04/05 4:13 UTC
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agda

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haskell

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axiom

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homework

PA6 : ?{m n} -> m = n -> n = m

is the axiom I am trying to solve and support, I've tried using a cong (from the core library) but am having troubles with the cong constructor

PA6 = cong

gets me nowhere, I know for cong I am required to supply a refl for equality and a type, but I'm, not sure what type I'm supposed to supply. Ideas?

This is for a small assignment at University, so I'd rather someone demonstrate what I've missed rather than write the acutual answer, but I'd appreciate any degree of support.

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